I am looking to create a predictive model in ArcGIS. I have done this previously with glm with poisson distribution and found it relatively straightforward in raster calculator e.g.
exp(intercept + ...

I am putting together a compilation of 1/3 arc second, and 1/9 arc second DEM data for essentially all of southeastern Oregon in ArcGIS. This surface would be used for geomorphological and geological ...

I am looking to model phosphorus, nitrogen and sediment loads at the watershed and sub-watershed scale in Southern Ontario where the primary land use is agricultural.
What is the best model to use? ...

How do you generate a species distribution probability map from GAM models? Or in other words, how do you set up a GAM equation in GIS to produce probability of species distribution?
It is simple to ...

I am having problems adding occurrence data to openModeller and I think that the format might be the problem.
I am using Excel with the fields: #ID Taxon Name Longitude Latitude.
I saved the result ...

I'm trying to find out about the notion of potential of acessibility using the methods of Huff.
I´m using QGIS, with point data (with the variables that I would like to use) and polygons for Europe ...

I'm fitting a SDM using R. A requirement is that all environmental predictor layers have the same extent, origin and resolution.
I have high resolution bathymetry data (25m) that I will resample to ...

I am trying to use SWAT (Soil and Water Assessment Tool) for watershed management activities.
It is a set of commandline tools and needs a complex set of input data some of which can be generated from ...

I've been asked by my company to generate a conceptual site model for a project and I have no clue where to start. The purpose is to show groundwater flow through a few layers of rock either in 2D or ...

Does anyone have any advice or has anyone experienced any limitations in ArcGIS software when trying to use model builder for any type of environmental phenomenon? I know that Vensim and Stella can be ...

I'm doing some GIS as part of my college course and have just started to do some 3D modelling, I'm really a GIS novice, The module is short (only 5 lectures) My lecturer has said that it is possible ...

I'm searching for world land cover data with higher resolution than the global land cover.
I'm working on fire prediction algorithms and I want to do a nice browser based demo were you can select a ...

I am working on passive defense modeling, using GIS. Modeling passive defense can be better implemented using GIS and I've come up with my own methods. It would be far better for me if I know there ...

I wish to generate highways network routings and travel times from trip pairs. The trip pairs are between the centroids of UK census Lower Super Output Areas. For each trip pair (perhaps 5,000 records ...

I´m trying to model building rooftops based on a LiDAR dataset. I've already interpolated using Delaunay's triangulation a DEM with 1m resolution. Due to LiDAR data is not accurate in building edges, ...

In a previous role I helped create Noise Maps for Northern England.
The predicted noise levels was done using the IMMI package (which I can recommend) and the cartographic output was done in ArcMap. ...

I am looking for a way to simulate a gravity model using a point-based layer.
All my points are assigned a z-value and the higher this value, the larger is their "sphere of influence". This influence ...

I want to perform an Inverse distance weighted (IDW) interpolation to a series of points. However my data set can be categorical or binary and just like the IDW I want to interpolate the new values ...

I'm doing an analysis on disease in Chile. I'm using the rate as the Dependent Variable and both remote sensing and housing-type data as the Independent Variables. I have several questions regarding ...

I'm very new to QGIS, I have started using it as my new company is not willing to pay for ArcGIS and Target at this stage so I'm hoping QGIS can substitute not just in the interim but for good.
What ...

Is there a PostGIS implementation of the Brabyn and Skelly road network travel time model for the New Zealand road network? This model is outlined in:
Brabyn L, Skelly C. Modeling population access ...

I am working on a distance model that creates distance rings around a given point and assigns those rings a probability. The point is in the center of a 25 x 25 km area, and the model fails to assign ...

I am looking to assemble clear examples of Bayesian modelling / smoothing in a GIS. I have yet to see GIS being used to conduct Bayesian style analytical models and would like to see what is currently ...